/*
 * Copyright (C) 2013 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License
 */

package com.aplink.generic.google.datetimepicker.time;

import java.text.DateFormatSymbols;
import java.util.ArrayList;
import java.util.Locale;

import android.animation.ObjectAnimator;
import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.Resources;
import android.os.Bundle;
import android.support.v4.app.DialogFragment;
import android.util.Log;
import android.view.KeyCharacterMap;
import android.view.KeyEvent;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnKeyListener;
import android.view.ViewGroup;
import android.view.Window;
import android.widget.RelativeLayout;
import android.widget.TextView;

import com.aplink.generic.google.datetimepicker.HapticFeedbackController;
import com.aplink.generic.google.datetimepicker.Utils;
import com.aplink.generic.google.datetimepicker.time.RadialPickerLayout.OnValueSelectedListener;
import com.aplink.sg.R;

/**
 * Dialog to set a time.
 */
public class TimePickerDialog extends DialogFragment implements
        OnValueSelectedListener {
    private class KeyboardListener implements OnKeyListener {
        @Override
        public boolean onKey(final View v, final int keyCode,
                final KeyEvent event) {
            if (event.getAction() == KeyEvent.ACTION_UP) {
                return processKeyUp(keyCode);
            }
            return false;
        }
    }

    /**
     * Simple node class to be used for traversal to check for legal times.
     * mLegalKeys represents the keys that can be typed to get to the node.
     * mChildren are the children that can be reached from this node.
     */
    private class Node {
        private final ArrayList<Node> mChildren;
        private final int[] mLegalKeys;

        public Node(final int... legalKeys) {
            this.mLegalKeys = legalKeys;
            this.mChildren = new ArrayList<Node>();
        }

        public void addChild(final Node child) {
            this.mChildren.add(child);
        }

        public Node canReach(final int key) {
            if (this.mChildren == null) {
                return null;
            }
            for (final Node child : this.mChildren) {
                if (child.containsKey(key)) {
                    return child;
                }
            }
            return null;
        }

        public boolean containsKey(final int key) {
            for (final int mLegalKey : this.mLegalKeys) {
                if (mLegalKey == key) {
                    return true;
                }
            }
            return false;
        }
    }

    /**
     * The callback interface used to indicate the user is done filling in the
     * time (they clicked on the 'Set' button).
     */
    public interface OnTimeSetListener {

        /**
         * @param view
         *            The view associated with this listener.
         * @param hourOfDay
         *            The hour that was set.
         * @param minute
         *            The minute that was set.
         */
        void onTimeSet(RadialPickerLayout view, int hourOfDay, int minute);
    }

    public static final int AM = 0;
    // NOT a real index for the purpose of what's showing.
    public static final int AMPM_INDEX = 2;
    // Also NOT a real index, just used for keyboard mode.
    public static final int ENABLE_PICKER_INDEX = 3;
    public static final int HOUR_INDEX = 0;
    private static final String KEY_CURRENT_ITEM_SHOWING = "current_item_showing";

    private static final String KEY_DARK_THEME = "dark_theme";
    private static final String KEY_HOUR_OF_DAY = "hour_of_day";
    private static final String KEY_IN_KB_MODE = "in_kb_mode";
    private static final String KEY_IS_24_HOUR_VIEW = "is_24_hour_view";
    private static final String KEY_MINUTE = "minute";
    private static final String KEY_TYPED_TIMES = "typed_times";

    public static final int MINUTE_INDEX = 1;

    public static final int PM = 1;

    // Delay before starting the pulse animation, in ms.
    private static final int PULSE_ANIMATOR_DELAY = 300;

    private static final String TAG = "TimePickerDialog";

    private static int getValFromKeyCode(final int keyCode) {
        switch (keyCode) {
        case KeyEvent.KEYCODE_0:
            return 0;
        case KeyEvent.KEYCODE_1:
            return 1;
        case KeyEvent.KEYCODE_2:
            return 2;
        case KeyEvent.KEYCODE_3:
            return 3;
        case KeyEvent.KEYCODE_4:
            return 4;
        case KeyEvent.KEYCODE_5:
            return 5;
        case KeyEvent.KEYCODE_6:
            return 6;
        case KeyEvent.KEYCODE_7:
            return 7;
        case KeyEvent.KEYCODE_8:
            return 8;
        case KeyEvent.KEYCODE_9:
            return 9;
        default:
            return -1;
        }
    }

    public static TimePickerDialog newInstance(
            final OnTimeSetListener callback, final int hourOfDay,
            final int minute, final boolean is24HourMode) {
        final TimePickerDialog ret = new TimePickerDialog();
        ret.initialize(callback, hourOfDay, minute, is24HourMode);
        return ret;
    }

    private boolean mAllowAutoAdvance;
    private int mAmKeyCode;
    private View mAmPmHitspace;
    private TextView mAmPmTextView;
    private String mAmText;

    private OnTimeSetListener mCallback;
    private String mDeletedKeyFormat;
    private TextView mDoneButton;
    private String mDoublePlaceholderText;

    private HapticFeedbackController mHapticFeedbackController;
    // Accessibility strings.
    private String mHourPickerDescription;
    private TextView mHourSpaceView;
    private TextView mHourView;
    private int mInitialHourOfDay;

    private int mInitialMinute;
    private boolean mInKbMode;
    private boolean mIs24HourMode;
    private Node mLegalTimesTree;
    private String mMinutePickerDescription;
    private TextView mMinuteSpaceView;
    private TextView mMinuteView;
    // For hardware IME input.
    private char mPlaceholderText;

    private int mPmKeyCode;
    private String mPmText;
    private int mSelectedColor;
    private String mSelectHours;

    private String mSelectMinutes;

    private boolean mThemeDark;

    private RadialPickerLayout mTimePicker;

    private ArrayList<Integer> mTypedTimes;

    private int mUnselectedColor;

    public TimePickerDialog() {
        // Empty constructor required for dialog fragment.
    }

    public TimePickerDialog(final Context context, final int theme,
            final OnTimeSetListener callback, final int hourOfDay,
            final int minute, final boolean is24HourMode) {
        // Empty constructor required for dialog fragment.
    }

    private boolean addKeyIfLegal(final int keyCode) {
        // If we're in 24hour mode, we'll need to check if the input is full. If
        // in AM/PM mode,
        // we'll need to see if AM/PM have been typed.
        if ((this.mIs24HourMode && (this.mTypedTimes.size() == 4))
                || (!this.mIs24HourMode && isTypedTimeFullyLegal())) {
            return false;
        }

        this.mTypedTimes.add(keyCode);
        if (!isTypedTimeLegalSoFar()) {
            deleteLastTypedKey();
            return false;
        }

        final int val = TimePickerDialog.getValFromKeyCode(keyCode);
        Utils.tryAccessibilityAnnounce(this.mTimePicker,
                String.format("%d", val));
        // Automatically fill in 0's if AM or PM was legally entered.
        if (isTypedTimeFullyLegal()) {
            if (!this.mIs24HourMode && (this.mTypedTimes.size() <= 3)) {
                this.mTypedTimes.add(this.mTypedTimes.size() - 1,
                        KeyEvent.KEYCODE_0);
                this.mTypedTimes.add(this.mTypedTimes.size() - 1,
                        KeyEvent.KEYCODE_0);
            }
            this.mDoneButton.setEnabled(true);
        }

        return true;
    }

    private int deleteLastTypedKey() {
        final int deleted = this.mTypedTimes
                .remove(this.mTypedTimes.size() - 1);
        if (!isTypedTimeFullyLegal()) {
            this.mDoneButton.setEnabled(false);
        }
        return deleted;
    }

    /**
     * Get out of keyboard mode. If there is nothing in typedTimes, revert to
     * TimePicker's time.
     * 
     * @param changeDisplays
     *            If true, update the displays with the relevant time.
     */
    private void finishKbMode(final boolean updateDisplays) {
        this.mInKbMode = false;
        if (!this.mTypedTimes.isEmpty()) {
            final int values[] = getEnteredTime(null);
            this.mTimePicker.setTime(values[0], values[1]);
            if (!this.mIs24HourMode) {
                this.mTimePicker.setAmOrPm(values[2]);
            }
            this.mTypedTimes.clear();
        }
        if (updateDisplays) {
            updateDisplay(false);
            this.mTimePicker.trySettingInputEnabled(true);
        }
    }

    /**
     * Create a tree for deciding what keys can legally be typed.
     */
    private void generateLegalTimesTree() {
        // Create a quick cache of numbers to their keycodes.
        final int k0 = KeyEvent.KEYCODE_0;
        final int k1 = KeyEvent.KEYCODE_1;
        final int k2 = KeyEvent.KEYCODE_2;
        final int k3 = KeyEvent.KEYCODE_3;
        final int k4 = KeyEvent.KEYCODE_4;
        final int k5 = KeyEvent.KEYCODE_5;
        final int k6 = KeyEvent.KEYCODE_6;
        final int k7 = KeyEvent.KEYCODE_7;
        final int k8 = KeyEvent.KEYCODE_8;
        final int k9 = KeyEvent.KEYCODE_9;

        // The root of the tree doesn't contain any numbers.
        this.mLegalTimesTree = new Node();
        if (this.mIs24HourMode) {
            // We'll be re-using these nodes, so we'll save them.
            final Node minuteFirstDigit = new Node(k0, k1, k2, k3, k4, k5);
            final Node minuteSecondDigit = new Node(k0, k1, k2, k3, k4, k5, k6,
                    k7, k8, k9);
            // The first digit must be followed by the second digit.
            minuteFirstDigit.addChild(minuteSecondDigit);

            // The first digit may be 0-1.
            Node firstDigit = new Node(k0, k1);
            this.mLegalTimesTree.addChild(firstDigit);

            // When the first digit is 0-1, the second digit may be 0-5.
            Node secondDigit = new Node(k0, k1, k2, k3, k4, k5);
            firstDigit.addChild(secondDigit);
            // We may now be followed by the first minute digit. E.g. 00:09,
            // 15:58.
            secondDigit.addChild(minuteFirstDigit);

            // When the first digit is 0-1, and the second digit is 0-5, the
            // third digit may be 6-9.
            final Node thirdDigit = new Node(k6, k7, k8, k9);
            // The time must now be finished. E.g. 0:55, 1:08.
            secondDigit.addChild(thirdDigit);

            // When the first digit is 0-1, the second digit may be 6-9.
            secondDigit = new Node(k6, k7, k8, k9);
            firstDigit.addChild(secondDigit);
            // We must now be followed by the first minute digit. E.g. 06:50,
            // 18:20.
            secondDigit.addChild(minuteFirstDigit);

            // The first digit may be 2.
            firstDigit = new Node(k2);
            this.mLegalTimesTree.addChild(firstDigit);

            // When the first digit is 2, the second digit may be 0-3.
            secondDigit = new Node(k0, k1, k2, k3);
            firstDigit.addChild(secondDigit);
            // We must now be followed by the first minute digit. E.g. 20:50,
            // 23:09.
            secondDigit.addChild(minuteFirstDigit);

            // When the first digit is 2, the second digit may be 4-5.
            secondDigit = new Node(k4, k5);
            firstDigit.addChild(secondDigit);
            // We must now be followd by the last minute digit. E.g. 2:40, 2:53.
            secondDigit.addChild(minuteSecondDigit);

            // The first digit may be 3-9.
            firstDigit = new Node(k3, k4, k5, k6, k7, k8, k9);
            this.mLegalTimesTree.addChild(firstDigit);
            // We must now be followed by the first minute digit. E.g. 3:57,
            // 8:12.
            firstDigit.addChild(minuteFirstDigit);
        } else {
            // We'll need to use the AM/PM node a lot.
            // Set up AM and PM to respond to "a" and "p".
            final Node ampm = new Node(getAmOrPmKeyCode(TimePickerDialog.AM),
                    getAmOrPmKeyCode(TimePickerDialog.PM));

            // The first hour digit may be 1.
            Node firstDigit = new Node(k1);
            this.mLegalTimesTree.addChild(firstDigit);
            // We'll allow quick input of on-the-hour times. E.g. 1pm.
            firstDigit.addChild(ampm);

            // When the first digit is 1, the second digit may be 0-2.
            Node secondDigit = new Node(k0, k1, k2);
            firstDigit.addChild(secondDigit);
            // Also for quick input of on-the-hour times. E.g. 10pm, 12am.
            secondDigit.addChild(ampm);

            // When the first digit is 1, and the second digit is 0-2, the third
            // digit may be 0-5.
            Node thirdDigit = new Node(k0, k1, k2, k3, k4, k5);
            secondDigit.addChild(thirdDigit);
            // The time may be finished now. E.g. 1:02pm, 1:25am.
            thirdDigit.addChild(ampm);

            // When the first digit is 1, the second digit is 0-2, and the third
            // digit is 0-5,
            // the fourth digit may be 0-9.
            final Node fourthDigit = new Node(k0, k1, k2, k3, k4, k5, k6, k7,
                    k8, k9);
            thirdDigit.addChild(fourthDigit);
            // The time must be finished now. E.g. 10:49am, 12:40pm.
            fourthDigit.addChild(ampm);

            // When the first digit is 1, and the second digit is 0-2, the third
            // digit may be 6-9.
            thirdDigit = new Node(k6, k7, k8, k9);
            secondDigit.addChild(thirdDigit);
            // The time must be finished now. E.g. 1:08am, 1:26pm.
            thirdDigit.addChild(ampm);

            // When the first digit is 1, the second digit may be 3-5.
            secondDigit = new Node(k3, k4, k5);
            firstDigit.addChild(secondDigit);

            // When the first digit is 1, and the second digit is 3-5, the third
            // digit may be 0-9.
            thirdDigit = new Node(k0, k1, k2, k3, k4, k5, k6, k7, k8, k9);
            secondDigit.addChild(thirdDigit);
            // The time must be finished now. E.g. 1:39am, 1:50pm.
            thirdDigit.addChild(ampm);

            // The hour digit may be 2-9.
            firstDigit = new Node(k2, k3, k4, k5, k6, k7, k8, k9);
            this.mLegalTimesTree.addChild(firstDigit);
            // We'll allow quick input of on-the-hour-times. E.g. 2am, 5pm.
            firstDigit.addChild(ampm);

            // When the first digit is 2-9, the second digit may be 0-5.
            secondDigit = new Node(k0, k1, k2, k3, k4, k5);
            firstDigit.addChild(secondDigit);

            // When the first digit is 2-9, and the second digit is 0-5, the
            // third digit may be 0-9.
            thirdDigit = new Node(k0, k1, k2, k3, k4, k5, k6, k7, k8, k9);
            secondDigit.addChild(thirdDigit);
            // The time must be finished now. E.g. 2:57am, 9:30pm.
            thirdDigit.addChild(ampm);
        }
    }

    /**
     * Get the keycode value for AM and PM in the current language.
     */
    private int getAmOrPmKeyCode(final int amOrPm) {
        // Cache the codes.
        if ((this.mAmKeyCode == -1) || (this.mPmKeyCode == -1)) {
            // Find the first character in the AM/PM text that is unique.
            final KeyCharacterMap kcm = KeyCharacterMap
                    .load(KeyCharacterMap.VIRTUAL_KEYBOARD);
            char amChar;
            char pmChar;
            for (int i = 0; i < Math.max(this.mAmText.length(),
                    this.mPmText.length()); i++) {
                amChar = this.mAmText.toLowerCase(Locale.getDefault())
                        .charAt(i);
                pmChar = this.mPmText.toLowerCase(Locale.getDefault())
                        .charAt(i);
                if (amChar != pmChar) {
                    final KeyEvent[] events = kcm.getEvents(new char[] {
                            amChar, pmChar });
                    // There should be 4 events: a down and up for both AM and
                    // PM.
                    if ((events != null) && (events.length == 4)) {
                        this.mAmKeyCode = events[0].getKeyCode();
                        this.mPmKeyCode = events[2].getKeyCode();
                    } else {
                        Log.e(TimePickerDialog.TAG,
                                "Unable to find keycodes for AM and PM.");
                    }
                    break;
                }
            }
        }
        if (amOrPm == TimePickerDialog.AM) {
            return this.mAmKeyCode;
        } else if (amOrPm == TimePickerDialog.PM) {
            return this.mPmKeyCode;
        }

        return -1;
    }

    /**
     * Get the currently-entered time, as integer values of the hours and
     * minutes typed.
     * 
     * @param enteredZeros
     *            A size-2 boolean array, which the caller should initialize,
     *            and which may then be used for the caller to know whether
     *            zeros had been explicitly entered as either hours of minutes.
     *            This is helpful for deciding whether to show the dashes, or
     *            actual 0's.
     * @return A size-3 int array. The first value will be the hours, the second
     *         value will be the minutes, and the third will be either
     *         TimePickerDialog.AM or TimePickerDialog.PM.
     */
    private int[] getEnteredTime(final Boolean[] enteredZeros) {
        int amOrPm = -1;
        int startIndex = 1;
        if (!this.mIs24HourMode && isTypedTimeFullyLegal()) {
            final int keyCode = this.mTypedTimes
                    .get(this.mTypedTimes.size() - 1);
            if (keyCode == getAmOrPmKeyCode(TimePickerDialog.AM)) {
                amOrPm = TimePickerDialog.AM;
            } else if (keyCode == getAmOrPmKeyCode(TimePickerDialog.PM)) {
                amOrPm = TimePickerDialog.PM;
            }
            startIndex = 2;
        }
        int minute = -1;
        int hour = -1;
        for (int i = startIndex; i <= this.mTypedTimes.size(); i++) {
            final int val = TimePickerDialog.getValFromKeyCode(this.mTypedTimes
                    .get(this.mTypedTimes.size() - i));
            if (i == startIndex) {
                minute = val;
            } else if (i == (startIndex + 1)) {
                minute += 10 * val;
                if ((enteredZeros != null) && (val == 0)) {
                    enteredZeros[1] = true;
                }
            } else if (i == (startIndex + 2)) {
                hour = val;
            } else if (i == (startIndex + 3)) {
                hour += 10 * val;
                if ((enteredZeros != null) && (val == 0)) {
                    enteredZeros[0] = true;
                }
            }
        }

        final int[] ret = { hour, minute, amOrPm };
        return ret;
    }

    public void initialize(final OnTimeSetListener callback,
            final int hourOfDay, final int minute, final boolean is24HourMode) {
        this.mCallback = callback;

        this.mInitialHourOfDay = hourOfDay;
        this.mInitialMinute = minute;
        this.mIs24HourMode = is24HourMode;
        this.mInKbMode = false;
        this.mThemeDark = false;
    }

    public boolean isThemeDark() {
        return this.mThemeDark;
    }

    /**
     * Check if the time that has been typed so far is completely legal, as is.
     */
    private boolean isTypedTimeFullyLegal() {
        if (this.mIs24HourMode) {
            // For 24-hour mode, the time is legal if the hours and minutes are
            // each legal. Note:
            // getEnteredTime() will ONLY call isTypedTimeFullyLegal() when NOT
            // in 24hour mode.
            final int[] values = getEnteredTime(null);
            return ((values[0] >= 0) && (values[1] >= 0) && (values[1] < 60));
        } else {
            // For AM/PM mode, the time is legal if it contains an AM or PM, as
            // those can only be
            // legally added at specific times based on the tree's algorithm.
            return (this.mTypedTimes
                    .contains(getAmOrPmKeyCode(TimePickerDialog.AM)) || this.mTypedTimes
                    .contains(getAmOrPmKeyCode(TimePickerDialog.PM)));
        }
    }

    /**
     * Traverse the tree to see if the keys that have been typed so far are
     * legal as is, or may become legal as more keys are typed (excluding
     * backspace).
     */
    private boolean isTypedTimeLegalSoFar() {
        Node node = this.mLegalTimesTree;
        for (final int keyCode : this.mTypedTimes) {
            node = node.canReach(keyCode);
            if (node == null) {
                return false;
            }
        }
        return true;
    }

    @Override
    public void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if ((savedInstanceState != null)
                && savedInstanceState
                        .containsKey(TimePickerDialog.KEY_HOUR_OF_DAY)
                && savedInstanceState.containsKey(TimePickerDialog.KEY_MINUTE)
                && savedInstanceState
                        .containsKey(TimePickerDialog.KEY_IS_24_HOUR_VIEW)) {
            this.mInitialHourOfDay = savedInstanceState
                    .getInt(TimePickerDialog.KEY_HOUR_OF_DAY);
            this.mInitialMinute = savedInstanceState
                    .getInt(TimePickerDialog.KEY_MINUTE);
            this.mIs24HourMode = savedInstanceState
                    .getBoolean(TimePickerDialog.KEY_IS_24_HOUR_VIEW);
            this.mInKbMode = savedInstanceState
                    .getBoolean(TimePickerDialog.KEY_IN_KB_MODE);
            this.mThemeDark = savedInstanceState
                    .getBoolean(TimePickerDialog.KEY_DARK_THEME);
        }
    }

    @Override
    public View onCreateView(final LayoutInflater inflater,
            final ViewGroup container, final Bundle savedInstanceState) {
        getDialog().getWindow().requestFeature(Window.FEATURE_NO_TITLE);

        final View view = inflater.inflate(R.layout.google__time_picker_dialog,
                null);
        final KeyboardListener keyboardListener = new KeyboardListener();
        view.findViewById(R.id.time_picker_dialog).setOnKeyListener(
                keyboardListener);

        final Resources res = getResources();
        this.mHourPickerDescription = res
                .getString(R.string.hour_picker_description);
        this.mSelectHours = res.getString(R.string.select_hours);
        this.mMinutePickerDescription = res
                .getString(R.string.minute_picker_description);
        this.mSelectMinutes = res.getString(R.string.select_minutes);
        this.mSelectedColor = res.getColor(this.mThemeDark ? R.color.red
                : R.color.blue);
        this.mUnselectedColor = res.getColor(this.mThemeDark ? R.color.white
                : R.color.numbers_text_color);

        this.mHourView = (TextView) view.findViewById(R.id.hours);
        this.mHourView.setOnKeyListener(keyboardListener);
        this.mHourSpaceView = (TextView) view.findViewById(R.id.hour_space);
        this.mMinuteSpaceView = (TextView) view
                .findViewById(R.id.minutes_space);
        this.mMinuteView = (TextView) view.findViewById(R.id.minutes);
        this.mMinuteView.setOnKeyListener(keyboardListener);
        this.mAmPmTextView = (TextView) view.findViewById(R.id.ampm_label);
        this.mAmPmTextView.setOnKeyListener(keyboardListener);
        final String[] amPmTexts = new DateFormatSymbols().getAmPmStrings();
        this.mAmText = amPmTexts[0];
        this.mPmText = amPmTexts[1];

        this.mHapticFeedbackController = new HapticFeedbackController(
                getActivity());

        this.mTimePicker = (RadialPickerLayout) view
                .findViewById(R.id.time_picker);
        this.mTimePicker.setOnValueSelectedListener(this);
        this.mTimePicker.setOnKeyListener(keyboardListener);
        this.mTimePicker.initialize(getActivity(),
                this.mHapticFeedbackController, this.mInitialHourOfDay,
                this.mInitialMinute, this.mIs24HourMode);

        int currentItemShowing = TimePickerDialog.HOUR_INDEX;
        if ((savedInstanceState != null)
                && savedInstanceState
                        .containsKey(TimePickerDialog.KEY_CURRENT_ITEM_SHOWING)) {
            currentItemShowing = savedInstanceState
                    .getInt(TimePickerDialog.KEY_CURRENT_ITEM_SHOWING);
        }
        setCurrentItemShowing(currentItemShowing, false, true, true);
        this.mTimePicker.invalidate();

        this.mHourView.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(final View v) {
                TimePickerDialog.this.setCurrentItemShowing(
                        TimePickerDialog.HOUR_INDEX, true, false, true);
                TimePickerDialog.this.tryVibrate();
            }
        });
        this.mMinuteView.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(final View v) {
                TimePickerDialog.this.setCurrentItemShowing(
                        TimePickerDialog.MINUTE_INDEX, true, false, true);
                TimePickerDialog.this.tryVibrate();
            }
        });

        this.mDoneButton = (TextView) view.findViewById(R.id.done_button);
        this.mDoneButton.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(final View v) {
                if (TimePickerDialog.this.mInKbMode
                        && TimePickerDialog.this.isTypedTimeFullyLegal()) {
                    TimePickerDialog.this.finishKbMode(false);
                } else {
                    TimePickerDialog.this.tryVibrate();
                }
                if (TimePickerDialog.this.mCallback != null) {
                    TimePickerDialog.this.mCallback.onTimeSet(
                            TimePickerDialog.this.mTimePicker,
                            TimePickerDialog.this.mTimePicker.getHours(),
                            TimePickerDialog.this.mTimePicker.getMinutes());
                }
                TimePickerDialog.this.dismiss();
            }
        });
        this.mDoneButton.setOnKeyListener(keyboardListener);

        // Enable or disable the AM/PM view.
        this.mAmPmHitspace = view.findViewById(R.id.ampm_hitspace);
        if (this.mIs24HourMode) {
            this.mAmPmTextView.setVisibility(View.GONE);

            final RelativeLayout.LayoutParams paramsSeparator = new RelativeLayout.LayoutParams(
                    android.view.ViewGroup.LayoutParams.WRAP_CONTENT,
                    android.view.ViewGroup.LayoutParams.WRAP_CONTENT);
            paramsSeparator.addRule(RelativeLayout.CENTER_IN_PARENT);
            final TextView separatorView = (TextView) view
                    .findViewById(R.id.separator);
            separatorView.setLayoutParams(paramsSeparator);
        } else {
            this.mAmPmTextView.setVisibility(View.VISIBLE);
            updateAmPmDisplay(this.mInitialHourOfDay < 12 ? TimePickerDialog.AM
                    : TimePickerDialog.PM);
            this.mAmPmHitspace.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(final View v) {
                    TimePickerDialog.this.tryVibrate();
                    int amOrPm = TimePickerDialog.this.mTimePicker
                            .getIsCurrentlyAmOrPm();
                    if (amOrPm == TimePickerDialog.AM) {
                        amOrPm = TimePickerDialog.PM;
                    } else if (amOrPm == TimePickerDialog.PM) {
                        amOrPm = TimePickerDialog.AM;
                    }
                    TimePickerDialog.this.updateAmPmDisplay(amOrPm);
                    TimePickerDialog.this.mTimePicker.setAmOrPm(amOrPm);
                }
            });
        }

        this.mAllowAutoAdvance = true;
        setHour(this.mInitialHourOfDay, true);
        setMinute(this.mInitialMinute);

        // Set up for keyboard mode.
        this.mDoublePlaceholderText = res.getString(R.string.time_placeholder);
        this.mDeletedKeyFormat = res.getString(R.string.deleted_key);
        this.mPlaceholderText = this.mDoublePlaceholderText.charAt(0);
        this.mAmKeyCode = this.mPmKeyCode = -1;
        generateLegalTimesTree();
        if (this.mInKbMode) {
            this.mTypedTimes = savedInstanceState
                    .getIntegerArrayList(TimePickerDialog.KEY_TYPED_TIMES);
            tryStartingKbMode(-1);
            this.mHourView.invalidate();
        } else if (this.mTypedTimes == null) {
            this.mTypedTimes = new ArrayList<Integer>();
        }

        // Set the theme at the end so that the initialize()s above don't
        // counteract the theme.
        this.mTimePicker.setTheme(getActivity().getApplicationContext(),
                this.mThemeDark);
        // Prepare some colors to use.
        final int white = res.getColor(R.color.white);
        final int circleBackground = res.getColor(R.color.circle_background);
        final int line = res.getColor(R.color.line_background);
        final int timeDisplay = res.getColor(R.color.numbers_text_color);
        final ColorStateList doneTextColor = res
                .getColorStateList(R.color.done_text_color);
        final int doneBackground = R.drawable.done_background_color;

        final int darkGray = res.getColor(R.color.dark_gray);
        final int lightGray = res.getColor(R.color.light_gray);
        final int darkLine = res.getColor(R.color.line_dark);
        final ColorStateList darkDoneTextColor = res
                .getColorStateList(R.color.done_text_color_dark);
        final int darkDoneBackground = R.drawable.done_background_color_dark;

        // Set the colors for each view based on the theme.
        view.findViewById(R.id.time_display_background).setBackgroundColor(
                this.mThemeDark ? darkGray : white);
        view.findViewById(R.id.time_display).setBackgroundColor(
                this.mThemeDark ? darkGray : white);
        ((TextView) view.findViewById(R.id.separator))
                .setTextColor(this.mThemeDark ? white : timeDisplay);
        ((TextView) view.findViewById(R.id.ampm_label))
                .setTextColor(this.mThemeDark ? white : timeDisplay);
        view.findViewById(R.id.line).setBackgroundColor(
                this.mThemeDark ? darkLine : line);
        this.mDoneButton.setTextColor(this.mThemeDark ? darkDoneTextColor
                : doneTextColor);
        this.mTimePicker.setBackgroundColor(this.mThemeDark ? lightGray
                : circleBackground);
        this.mDoneButton
                .setBackgroundResource(this.mThemeDark ? darkDoneBackground
                        : doneBackground);
        return view;
    }

    @Override
    public void onPause() {
        super.onPause();
        this.mHapticFeedbackController.stop();
    }

    @Override
    public void onResume() {
        super.onResume();
        this.mHapticFeedbackController.start();
    }

    @Override
    public void onSaveInstanceState(final Bundle outState) {
        if (this.mTimePicker != null) {
            outState.putInt(TimePickerDialog.KEY_HOUR_OF_DAY,
                    this.mTimePicker.getHours());
            outState.putInt(TimePickerDialog.KEY_MINUTE,
                    this.mTimePicker.getMinutes());
            outState.putBoolean(TimePickerDialog.KEY_IS_24_HOUR_VIEW,
                    this.mIs24HourMode);
            outState.putInt(TimePickerDialog.KEY_CURRENT_ITEM_SHOWING,
                    this.mTimePicker.getCurrentItemShowing());
            outState.putBoolean(TimePickerDialog.KEY_IN_KB_MODE, this.mInKbMode);
            if (this.mInKbMode) {
                outState.putIntegerArrayList(TimePickerDialog.KEY_TYPED_TIMES,
                        this.mTypedTimes);
            }
            outState.putBoolean(TimePickerDialog.KEY_DARK_THEME,
                    this.mThemeDark);
        }
    }

    /**
     * Called by the picker for updating the header display.
     */
    @Override
    public void onValueSelected(final int pickerIndex, final int newValue,
            final boolean autoAdvance) {
        if (pickerIndex == TimePickerDialog.HOUR_INDEX) {
            setHour(newValue, false);
            String announcement = String.format("%d", newValue);
            if (this.mAllowAutoAdvance && autoAdvance) {
                setCurrentItemShowing(TimePickerDialog.MINUTE_INDEX, true,
                        true, false);
                announcement += ". " + this.mSelectMinutes;
            } else {
                this.mTimePicker
                        .setContentDescription(this.mHourPickerDescription
                                + ": " + newValue);
            }

            Utils.tryAccessibilityAnnounce(this.mTimePicker, announcement);
        } else if (pickerIndex == TimePickerDialog.MINUTE_INDEX) {
            setMinute(newValue);
            this.mTimePicker
                    .setContentDescription(this.mMinutePickerDescription + ": "
                            + newValue);
        } else if (pickerIndex == TimePickerDialog.AMPM_INDEX) {
            updateAmPmDisplay(newValue);
        } else if (pickerIndex == TimePickerDialog.ENABLE_PICKER_INDEX) {
            if (!isTypedTimeFullyLegal()) {
                this.mTypedTimes.clear();
            }
            finishKbMode(true);
        }
    }

    /**
     * For keyboard mode, processes key events.
     * 
     * @param keyCode
     *            the pressed key.
     * @return true if the key was successfully processed, false otherwise.
     */
    private boolean processKeyUp(final int keyCode) {
        if ((keyCode == KeyEvent.KEYCODE_ESCAPE)
                || (keyCode == KeyEvent.KEYCODE_BACK)) {
            dismiss();
            return true;
        } else if (keyCode == KeyEvent.KEYCODE_TAB) {
            if (this.mInKbMode) {
                if (isTypedTimeFullyLegal()) {
                    finishKbMode(true);
                }
                return true;
            }
        } else if (keyCode == KeyEvent.KEYCODE_ENTER) {
            if (this.mInKbMode) {
                if (!isTypedTimeFullyLegal()) {
                    return true;
                }
                finishKbMode(false);
            }
            if (this.mCallback != null) {
                this.mCallback.onTimeSet(this.mTimePicker,
                        this.mTimePicker.getHours(),
                        this.mTimePicker.getMinutes());
            }
            dismiss();
            return true;
        } else if (keyCode == KeyEvent.KEYCODE_DEL) {
            if (this.mInKbMode) {
                if (!this.mTypedTimes.isEmpty()) {
                    final int deleted = deleteLastTypedKey();
                    String deletedKeyStr;
                    if (deleted == getAmOrPmKeyCode(TimePickerDialog.AM)) {
                        deletedKeyStr = this.mAmText;
                    } else if (deleted == getAmOrPmKeyCode(TimePickerDialog.PM)) {
                        deletedKeyStr = this.mPmText;
                    } else {
                        deletedKeyStr = String.format("%d",
                                TimePickerDialog.getValFromKeyCode(deleted));
                    }
                    Utils.tryAccessibilityAnnounce(this.mTimePicker, String
                            .format(this.mDeletedKeyFormat, deletedKeyStr));
                    updateDisplay(true);
                }
            }
        } else if ((keyCode == KeyEvent.KEYCODE_0)
                || (keyCode == KeyEvent.KEYCODE_1)
                || (keyCode == KeyEvent.KEYCODE_2)
                || (keyCode == KeyEvent.KEYCODE_3)
                || (keyCode == KeyEvent.KEYCODE_4)
                || (keyCode == KeyEvent.KEYCODE_5)
                || (keyCode == KeyEvent.KEYCODE_6)
                || (keyCode == KeyEvent.KEYCODE_7)
                || (keyCode == KeyEvent.KEYCODE_8)
                || (keyCode == KeyEvent.KEYCODE_9)
                || (!this.mIs24HourMode && ((keyCode == getAmOrPmKeyCode(TimePickerDialog.AM)) || (keyCode == getAmOrPmKeyCode(TimePickerDialog.PM))))) {
            if (!this.mInKbMode) {
                if (this.mTimePicker == null) {
                    // Something's wrong, because time picker should definitely
                    // not be null.
                    Log.e(TimePickerDialog.TAG,
                            "Unable to initiate keyboard mode, TimePicker was null.");
                    return true;
                }
                this.mTypedTimes.clear();
                tryStartingKbMode(keyCode);
                return true;
            }
            // We're already in keyboard mode.
            if (addKeyIfLegal(keyCode)) {
                updateDisplay(false);
            }
            return true;
        }
        return false;
    }

    // Show either Hours or Minutes.
    private void setCurrentItemShowing(final int index,
            final boolean animateCircle, final boolean delayLabelAnimate,
            final boolean announce) {
        this.mTimePicker.setCurrentItemShowing(index, animateCircle);

        TextView labelToAnimate;
        if (index == TimePickerDialog.HOUR_INDEX) {
            int hours = this.mTimePicker.getHours();
            if (!this.mIs24HourMode) {
                hours = hours % 12;
            }
            this.mTimePicker.setContentDescription(this.mHourPickerDescription
                    + ": " + hours);
            if (announce) {
                Utils.tryAccessibilityAnnounce(this.mTimePicker,
                        this.mSelectHours);
            }
            labelToAnimate = this.mHourView;
        } else {
            final int minutes = this.mTimePicker.getMinutes();
            this.mTimePicker
                    .setContentDescription(this.mMinutePickerDescription + ": "
                            + minutes);
            if (announce) {
                Utils.tryAccessibilityAnnounce(this.mTimePicker,
                        this.mSelectMinutes);
            }
            labelToAnimate = this.mMinuteView;
        }

        final int hourColor = (index == TimePickerDialog.HOUR_INDEX) ? this.mSelectedColor
                : this.mUnselectedColor;
        final int minuteColor = (index == TimePickerDialog.MINUTE_INDEX) ? this.mSelectedColor
                : this.mUnselectedColor;
        this.mHourView.setTextColor(hourColor);
        this.mMinuteView.setTextColor(minuteColor);

        final ObjectAnimator pulseAnimator = Utils.getPulseAnimator(
                labelToAnimate, 0.85f, 1.1f);
        if (delayLabelAnimate) {
            pulseAnimator.setStartDelay(TimePickerDialog.PULSE_ANIMATOR_DELAY);
        }
        pulseAnimator.start();
    }

    private void setHour(int value, final boolean announce) {
        String format;
        if (this.mIs24HourMode) {
            format = "%02d";
        } else {
            format = "%d";
            value = value % 12;
            if (value == 0) {
                value = 12;
            }
        }

        final CharSequence text = String.format(format, value);
        this.mHourView.setText(text);
        this.mHourSpaceView.setText(text);
        if (announce) {
            Utils.tryAccessibilityAnnounce(this.mTimePicker, text);
        }
    }

    private void setMinute(int value) {
        if (value == 60) {
            value = 0;
        }
        final CharSequence text = String.format(Locale.getDefault(), "%02d",
                value);
        Utils.tryAccessibilityAnnounce(this.mTimePicker, text);
        this.mMinuteView.setText(text);
        this.mMinuteSpaceView.setText(text);
    }

    public void setOnTimeSetListener(final OnTimeSetListener callback) {
        this.mCallback = callback;
    }

    public void setStartTime(final int hourOfDay, final int minute) {
        this.mInitialHourOfDay = hourOfDay;
        this.mInitialMinute = minute;
        this.mInKbMode = false;
    }

    /**
     * Set a dark or light theme. NOTE: this will only take effect for the next
     * onCreateView.
     */
    public void setThemeDark(final boolean dark) {
        this.mThemeDark = dark;
    }

    /**
     * Try to start keyboard mode with the specified key, as long as the
     * timepicker is not in the middle of a touch-event.
     * 
     * @param keyCode
     *            The key to use as the first press. Keyboard mode will not be
     *            started if the key is not legal to start with. Or, pass in -1
     *            to get into keyboard mode without a starting key.
     */
    private void tryStartingKbMode(final int keyCode) {
        if (this.mTimePicker.trySettingInputEnabled(false)
                && ((keyCode == -1) || addKeyIfLegal(keyCode))) {
            this.mInKbMode = true;
            this.mDoneButton.setEnabled(false);
            updateDisplay(false);
        }
    }

    public void tryVibrate() {
        this.mHapticFeedbackController.tryVibrate();
    }

    private void updateAmPmDisplay(final int amOrPm) {
        if (amOrPm == TimePickerDialog.AM) {
            this.mAmPmTextView.setText(this.mAmText);
            Utils.tryAccessibilityAnnounce(this.mTimePicker, this.mAmText);
            this.mAmPmHitspace.setContentDescription(this.mAmText);
        } else if (amOrPm == TimePickerDialog.PM) {
            this.mAmPmTextView.setText(this.mPmText);
            Utils.tryAccessibilityAnnounce(this.mTimePicker, this.mPmText);
            this.mAmPmHitspace.setContentDescription(this.mPmText);
        } else {
            this.mAmPmTextView.setText(this.mDoublePlaceholderText);
        }
    }

    /**
     * Update the hours, minutes, and AM/PM displays with the typed times. If
     * the typedTimes is empty, either show an empty display (filled with the
     * placeholder text), or update from the timepicker's values.
     * 
     * @param allowEmptyDisplay
     *            if true, then if the typedTimes is empty, use the placeholder
     *            text. Otherwise, revert to the timepicker's values.
     */
    private void updateDisplay(final boolean allowEmptyDisplay) {
        if (!allowEmptyDisplay && this.mTypedTimes.isEmpty()) {
            final int hour = this.mTimePicker.getHours();
            final int minute = this.mTimePicker.getMinutes();
            setHour(hour, true);
            setMinute(minute);
            if (!this.mIs24HourMode) {
                updateAmPmDisplay(hour < 12 ? TimePickerDialog.AM
                        : TimePickerDialog.PM);
            }
            setCurrentItemShowing(this.mTimePicker.getCurrentItemShowing(),
                    true, true, true);
            this.mDoneButton.setEnabled(true);
        } else {
            final Boolean[] enteredZeros = { false, false };
            final int[] values = getEnteredTime(enteredZeros);
            final String hourFormat = enteredZeros[0] ? "%02d" : "%2d";
            final String minuteFormat = (enteredZeros[1]) ? "%02d" : "%2d";
            final String hourStr = (values[0] == -1) ? this.mDoublePlaceholderText
                    : String.format(hourFormat, values[0]).replace(' ',
                            this.mPlaceholderText);
            final String minuteStr = (values[1] == -1) ? this.mDoublePlaceholderText
                    : String.format(minuteFormat, values[1]).replace(' ',
                            this.mPlaceholderText);
            this.mHourView.setText(hourStr);
            this.mHourSpaceView.setText(hourStr);
            this.mHourView.setTextColor(this.mUnselectedColor);
            this.mMinuteView.setText(minuteStr);
            this.mMinuteSpaceView.setText(minuteStr);
            this.mMinuteView.setTextColor(this.mUnselectedColor);
            if (!this.mIs24HourMode) {
                updateAmPmDisplay(values[2]);
            }
        }
    }
}
